<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
</head>
<body>
  
  <div id="app"></div>


  <script src="./renderer.js"></script>
  <script>
    // 1.通过h函数来创建虚拟节点VNode
    const vnode = h('div',{class:'why',id:'aaa'},[
      h('h2',null,'当前计数:0'),
      h('button',{onClick:function() {}},'+1')
    ])

    // 2.通过mount函数,将vnode挂载到div#app上
    mount(vnode,document.querySelector('#app'))
    
    // 3.创建一个新的vnode
    setTimeout(() => {
      const vnode1 = h('div',{class:'coder',id:'aaa'},[
      h('h2',null,'呵呵呵'),
      h('button',{onClick:function() {}},'-1')
    ])
      patch(vnode,vnode1)
    }, 2000);
  </script>

</body>
</html>